engIslamic Azad University, Shahreza BranchIranian Journal of Catalysis2252-02362345-48652015-12-01542973039716One-pot three component synthesis of 2-amino-4H-chromenes under green and high efficient conditionsLeila Moradil_moradi@kashanu.ac.ir1Mina Zare2Faculty of Chemistry, Department of Organic Chemistry, University of Kashan, P.O. Box 8731751167 Kashan, I. R. Iran.Faculty of Chemistry, Department of Organic Chemistry, University of Kashan, P.O. Box 87317-51167, Kashan, Iran.A simple, mild and high efficient procedure for one pot three component synthesis of 2-amino 4-H chromene derivatives was studied. The reaction was performed in water using aryl aldehydes, malononitrile and resorcinol, phloroglucinol or naphthole in the presence of N-methyl D-glucamine (Meglumine) as a green high efficient catalyst. The reaction was studied in thermal, microwave (MW) and ultrasonic (US) conditions. Obtained results show that meglumine, as a green catalyst, has high efficiency in all reaction conditions and the yield of products (in all cases) is high to excellent. Environment friendly solvent and catalyst, short reaction times and high yield products are the advantageous of presented research.http://ijc.iaush.ac.ir/article_9716_a8ce3a5cc1dc6c77314e9dfe0cf03657.pdfChromenesMeglumineOne-potGreen ConditionsUltrasonicMicrowaveengIslamic Azad University, Shahreza BranchIranian Journal of Catalysis2252-02362345-48652015-12-01543053099717Synthesis of benzimidazole derivatives using Ni2+ supported on hydroxyapatite-core@shell γ-Fe2O3 nanoparticles both under solvent and solvent-free conditionsEshagh Rezaee Nezhade.rezaee66@yahoo.com1Saaid Karimiansaaidkarimian@yahoo.com2Department of Chemistry, Payame Noor University, PO BOX 19395-4697 Tehran, IranDepartment of Chemistry, Payame Noor University, PO BOX 19395-4697 Tehran, IranNi2+ supported on hydroxyapatite-core@shell γ-Fe2O3 nanoparticles (γ-Fe2O3@HAp-Ni2+) was found to be a useful catalyst for the synthesis of benzimidazole derivatives from o-phenylenediamine and aldehydes under solvent and solvent-free conditions at 80 °C. This reaction affords the corresponding benzimidazole derivatives compared with the classical reactions this method consistently gives a high yield, easy magnetic separation, a short reaction time, simple workup and recyclable property of the catalyst. In this way, the catalyst was readily recovered using an external magnet and could be reused in five consecutive runs without significant loss of reactivity. The mean size and the surface morphology of the nanocatalyst were characterized by TEM, SEM, VSM, XRD and FTIR techniques.http://ijc.iaush.ac.ir/article_9717_02cfd74f1dcaf59536468c412818ddbc.pdfBenzimidazoleNi2+ supportedγ-Fe2O3 nanoparticleso-PhenylenediamineengIslamic Azad University, Shahreza BranchIranian Journal of Catalysis2252-02362345-48652015-12-01543113209718Nanomagnetite-Fe3O4 as a highly efficient, green and recyclable catalyst for the synthesis of 4,4´-(arylmethylene)-bis(3-methyl-1-phenyl-1H-pyrazol-5-ol)sAbdolkarim Zareabdolkarimzare@yahoo.com1Fereshteh Abi<fereshteh_abi_14@yahoo.com2Vahid Khakyzadehmr.khakizadeh@gmail.com3Ahmad Reza Moosavi-Zaremoosavizare@yahoo.com4Alireza Hasaninejada_hasaninejad@yahoo.com5Mahmoud Zareima.zarei123@gmail.com6Department of Chemistry, Payame Noor University, PO BOX 19395-4697, Tehran, Iran.Department of Chemistry, Payame Noor University, PO BOX 19395-4697, Tehran, IranFaculty of Chemistry, Bu-Ali Sina University, Hamedan, 6517838683, IranDepartment of Chemistry, University of Sayyed Jamaleddin Asadabadi, Asadabad 6541835583, IranDepartment of Chemistry, Faculty of Sciences, Persian Gulf University, Bushehr 75169, IranFaculty of Chemistry, Bu-Ali Sina University, Hamedan, 6517838683, IranNanomagnetite-Fe3O4 is used as a highly efficient, mild, green and recyclable nanomagnetite catalyst for the synthesis of 4,4´-(arylmethylene)-bis(3-methyl-1-phenyl-1H-pyrazol-5-ol) derivatives in solvent-free conditions. The condensation reaction of 3-methyl-1-phenyl-1H-pyrazol-5(4H)-one with aromatic aldehydes affords the title compounds in high yields and short reaction times. The nanocatalyst is reusable for seven times without significant loss of its catalytic activity. Short reaction times, high yields, generality, efficiency, recyclability of the catalyst for seven times, simple purification, clean reaction, and agreement with the green chemistry protocols are some advantages of in this method. the catalyst was characterized by transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), X-ray diffractometer (XRD) and vibrating sample magnetometer (VSM).http://ijc.iaush.ac.ir/article_9718_5f2f25c139c34cb24c8938a066600263.pdfNanomagnetite-Fe3O4Nanomagnetite44´-(Arylmethylene)-bis(3-methyl-1-phenyl-1H-pyrazol-5-ol)3-Methyl-1-phenyl-1H-pyrazol-5(4H)-oneAromatic aldehydeengIslamic Azad University, Shahreza BranchIranian Journal of Catalysis2252-02362345-48652015-12-01543213269967ZrP2O7 nanoparticles as a robust and efficient catalyst for the synthesis of 2-aryl-5-methyl-2,3-dihydro-1H-3-pyrazolones under microwave irradiationJavad Safaei-Ghomisafaei@kashanu.ac.ir1Esmaeil Afkhamiafkhamies@gmail.com2Hossein Shahbazi-Alavihossien_shahbazi@yahoo.com3Abolfazl Ziaratiabi_ziarati@yahoo.com4Department of Chemistry, Qom Branch, Islamic Azad University, Qom, Iran.Department of Organic Chemistry, Faculty of Chemistry, University of Kashan, Kashan, P.O. Box 87317-51167, Iran.Department of Chemistry, Qom Branch, Islamic Azad University, Qom, Iran.School of Chemistry, College of Science, University of Tehran, Tehran 14155-6455, Iran.ZrP2O7 nanoparticles have been used as an efficient catalyst for the preparation of 2-aryl-5-methyl-2,3-dihydro-1H-3-pyrazolones by a simple one-pot four-component reaction of phenyl hydrazines, ethyl acetoacetate ,β-naphthol and benzaldehydes under microwave irradiation in good to excellent yields. When the reaction was carried out using ZrOCl2.8H2O, ZrO2 and ZrP2O7 NPs as the catalyst, the product were obtained in moderate to good yield. The highest yield 92% was reached when the reaction was performed with 0.6 mol% of catalyst loading. Atom economy, green reaction, short reaction times, easy isolation of the targeted molecules, recovery and reusability of the catalyst are some of the important features of this protocol.http://ijc.iaush.ac.ir/article_9967_a942b5c47e89438122cd5b44fa753cc2.pdfZrP2O7 nanoparticlesPyrazolonesMicrowaveReusable catalystengIslamic Azad University, Shahreza BranchIranian Journal of Catalysis2252-02362345-48652015-12-01543273319720An efficient and selective method for conversion of oximes, semicarbazones and phenylhydrazones to the corresponding carbonyl compounds under solvent-free conditionsKhadijeh Yadollahzadehyadollahzadeh@gmail.com1Mahmoud Tajbakhshtajbaksh@umz.ac.ir2Young Researchers and Elite Club, Aliabad Katoul Branch, Islamic Azad University, Aliabad Katoul, Iran.Department of Chemistry, Mazandaran University, Babolsar, Iran.o-Xylylenebis (triphenylphosphonium peroxymonosulfate) (1) was easily prepared from an aqueous solution of oxone and o-xylylenebis- (triphenylphosphonium bromide). This Compound (1) is a useful and selective reagent for conversion of oximes, semicarbazones and phenylhydrazones to the corresponding carbonyl compounds. The reaction was carried out under solvent-free conditions and in the presence of catalytic amount of aluminium chloride. This method shows a good selectivity in oxidation of oximes, semicarbazones and phenylhydrazones in the presence of aliphatic and aromatic alcohols. The advantages of the present method include good functional group tolerance, high yields of products, simple experimental procedure and purification, no solvent and short reaction times.http://ijc.iaush.ac.ir/article_9720_ed6e0111f76e8db3a5215244b81f3817.pdfOxidationOximeSemicarbazonePhenylhydrazoneSolvent-freeengIslamic Azad University, Shahreza BranchIranian Journal of Catalysis2252-02362345-48652015-12-01543333379963Nano-CrY zeolite as a new and reusable catalyst for synthesis 2-aryl-1H-benzothiazolesMojgan Zendehdelmojganzendehdel@yahoo.com1Kaveh Khosravik-khosravi@araku.ac.ir2Maryam Javadizadehm-javadi@araku.ac.ir3Department of Chemistry, Faculty of Science, Arak University, Arak 38156-8-8349, Iran.Department of Chemistry, Faculty of Science, Arak University, Arak 38156-8-8349, Iran.Department of Chemistry, Faculty of Science, Arak University, Arak 38156-8-8349, Iran.The Nano-CrY zeolite synthesized and characterized by Fourier transfer infrared (FT-IR), X-ray diffraction (XRD),and Scanning electron microscopy (SEM).The result show that nano catalyst prepared with mainly particles size about 30-80 nm .The XRD show the structure of the zeolite does not collapse. This Nano-CrY zeolite has been used as new, and nontoxic catalyst for catalyzes of synthesis of 2-aryl-1H-benzothiazoles at mild condition . This procedure is simple, effective, inexpensive and green. The products were obtained in high yields and the catalyst is reusable. Since products were obtained by aqua work-up in good purity and complex purification methods are not necessary.http://ijc.iaush.ac.ir/article_9963_250bfb8eb9ea41837be6083acebb2712.pdfNano-CrY zeolite2-Aryl-1H-benzothiazolesNanocatalyst2-AminothiophenolCyclocondensationengIslamic Azad University, Shahreza BranchIranian Journal of Catalysis2252-02362345-48652015-12-01543393439964Lactic acid, as an efficient catalyst for the one-pot three-component synthesis of 1-amidoalkyl-2-naphthols under thermal solvent-free conditionsKhatereh Khandan-Baranikh_khandan_barani@yahoo.com1Arezo Motamedi-Aslmotamediarezo@yahoo.com2Department of Chemistry, Islamic Azad University, Zahedan Branch, P.O. Box 98135-978, Zahedan, Iran.Department of Chemistry, Islamic Azad University, Zahedan Branch, P.O. Box 98135-978, Zahedan, IranFor the first time lactic acid was applied as an efficient and green catalyst for the one-pot three-component synthesis of amidoalkyl naphthols via the condensation between arylaldehydes, 2-naphthol and amides or urea under thermal solvent-free conditions in good to excellent yields. We have demonestrated a mild and efficient eco-friendly tandem synthesis of amidoalkyl naphthols using lactic acid as a novel organoacid green promoter, which uses neither harsh conditions nor the use of hazardous or toxicant catalysts and reagents. This methodology has a number of advantages including: short reaction times, high yield, use of non-toxic and inexpensive catalyst, elimination of solvent and easy work-up.http://ijc.iaush.ac.ir/article_9964_c50c93b6fd9c4d1e0a95d9fc4c1c1c17.pdfLactic acidAmidoalkyl naphtholSolvent-freeThermal conditionengIslamic Azad University, Shahreza BranchIranian Journal of Catalysis2252-02362345-48652015-12-01543453509966Et3N as a catalyst for the synthesis of indeno[1,2-b]chromene derivatives via three-component condensation reactionAli Sadeghiali.sadeghirad@yahoo.com1Ali Hossein Rezayanahrezayan@ut.ac.ir2Ali Farajtabara_farajtabar@yahoo.com3Department of Chemistry, Jouybar Branch, Islamic Azad University, Jouybar, Iran.Department of Life Science Engineering, Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran.Department of Chemistry, Jouybar Branch, Islamic Azad University, Jouybar, Iran.Functionalized indeno[1,2-b]chromene derivatives have been synthesized via condensation reaction of 1H-indene-1,3(2H)-dione with benzaldehyde and cyclization with 2-hydroxynaphthalene-1,4-dione in the presence of a catalytic amount of triethylamine (Et3N) in EtOH at room temperature. It was observed that benzaldehyde bearing electron donating group gave high yield of product, whereas, benzaldehyde having electronic withdrawing substituent does not participate in this reaction. The structures were confirmed spectroscopically (IR, 1H- and 13C-NMR, and Mass). A plausible mechanism for this reaction is proposed (Scheme 2). Good yields and easy purification are the main advantages of the present method. Products of these reactions have structural similarity to naturally occurring pyranokunthone B, lambertellin, β-lapachone, and α-xiloidone.http://ijc.iaush.ac.ir/article_9966_a99a79d1b6d57ad8aaeb1a1ce37685f6.pdfIndeno[1,2-b]chromeneCondensation reaction1H-Indene-1,3(2H)-dione2-Hydroxynaphthalene-1,4-dioneengIslamic Azad University, Shahreza BranchIranian Journal of Catalysis2252-02362345-48652015-12-01543513559965An efficient synthesis of α,α'-benzylidene bis(4-hydroxycoumarin) derivatives catalyzed by Tl2O3 nanoparticlesMohammad Reza Nazarifarmohammadreza.nazarifar@gmail.com1Young Researchers and Elites Club, Shiraz Branch, Islamic Azad University, Shiraz, Iran.In this work, we attempted to synthesize thallium (III) oxide nano structures by direct thermal decomposition using thallium I phenylsuccinic acid coordination polymer [Tl(PsucH)]n as a precursor. Also, Tl2O3 nanoparticles have been characterized by scanning electron microscopy (SEM), X-Ray powder diffraction (XRD) and IR spectroscopy and then we report a simple and efficient method for the synthesis of α,α'-benzylidene bis(4-hydroxycoumarin) derivatives by aromatic aldehyde and 4-hydroxycoumarin by using Tl2O3 nanoparticles in H2O/EtOH at room temperature. A wide spectrum of functional groups, were tolerated in the developed protocol. The target molecules were obtained in good to excellent yield applying the current method. The catalyst can be recover for the subsequent reactions and reused without loss of activity.http://ijc.iaush.ac.ir/article_9965_8b35e0d026d5e44b0dbda151392fc448.pdfThallium (III) oxide nanostructures4-Hydroxycoumarinα,α'-Benzylidene bis(4-hydroxycoumarin)Aromatic aldehydeengIslamic Azad University, Shahreza BranchIranian Journal of Catalysis2252-02362345-48652015-12-01543573649719New method for preparation of MWCNT-SO3H as an efficient and reusable catalyst for the solvent-free synthesis of 3,4-dihydropyrimidin-2(1H)-ones/thionesLeila Moradil_moradi@kashanu.ac.ir1Gholam Reza Najafi2Hakimeh Saeidiroshan3Faculty of Chemistry, Department of Organic Chemistry, University of Kashan, P.O. Box 8731751167 Kashan, I. R. Iran.Department of Organic Chemistry, Islamic Azad University of Qom, Iran.Department of Organic Chemistry, Islamic Azad University of Qom, Iran.Multiwalled carbon nanotubes (MWCNTs) have been functionalized with -SO3H groups using new three steps chemical routes. Firstly, OH groups have been attached to CNT surfaces through a radical reaction. The second step involves converting the hydroxyl groups into the oxide one and last step included the attachment of –SO3H groups on the MWCNTs surfaces in the presence of 1-butyl-3-methyl imidazolium tetrafluoroborate [bmim]BF4 ionic liquid as catalyst. Functionalized MWCNTs were characterized by Fourier transform infrared (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM) and Raman Spectroscopy. Obtained product have be used as acidic nano catalyst in the Biginelli reaction for the synthesis of 3,4-dihydropyrimidin-2(1H)-one derivatives. The reaction was performed under solvent-free conditions with excellent yields and short reaction times in the presence of a reusable efficient catalyst.http://ijc.iaush.ac.ir/article_9719_227597988a08fa69456ee11b49035785.pdfMultiwalled carbon nanotubesFunctionalizationSulfonation[bmim] BF4 Ionic liquidMWCNTs-SO3HBiginelli reactionDihydropyrimidinonesengIslamic Azad University, Shahreza BranchIranian Journal of Catalysis2252-02362345-48652015-12-01543653719968Enhancement of photocatalytic activity of ZnO–SiO2 by nano-sized Pt for efficient removal of dyes from wastewater effluentsLeila Vafayileilavafayi@yahoo.com1Soodabe Gharibesoodabehghariebeh@yahoo.com2Department of Science, Firoozkooh Branch, Islamic Azad University, Firoozkooh, IranDepartment of Science, Firoozkooh Branch, Islamic Azad University, Firoozkooh, IranIn this work, ZnO/SiO2 nanoparticles were prepared using sol-gel method, and platinum particles were loaded on ZnO/SiO2 nanoparticles by photoreductive method. Samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FT-IR). The XRD patterns showed that the zinc oxide samples have a wurtzite structure (hexagonal phase). The crystallite size calculated by Scheerer’s equation is ~ 32 nm. For photocatalytic test, decomposition of Rhodamine B (RB), as an organic pollutant, was carried out. A comparison of degradation between bare catalyst and platinum loaded ZnO/SiO2 nanoparticle under UV-Vis light irradiation shows that the Pt- ZnO/SiO2 photocatalyst is more efficient than ZnO/SiO2 nanoparticles. Also, the activity of ZnO/SiO2 nanoparticles in the visible light are minimal, while loading of Pt in zinc oxide network displaced the band gap toward longer wavelengths (visible light) and improved the photocatalysis activity of ZnO/SiO2 in the range of visible light.http://ijc.iaush.ac.ir/article_9968_09648a3128e0757d68cd7e1dcf01f11a.pdfPhotocatalystRhodamine BUV-VisZnOorganic pollutantsengIslamic Azad University, Shahreza BranchIranian Journal of Catalysis2252-02362345-48652015-12-015437338110084Introduction of sulfonated rice husk ash as a highly efficient reusable catalyst for the protection of the hydroxyl groupFarhad Shirinishirini@guilan.ac.ir1Masoumeh Abedinimasoumehabedini2@gmail.com2Mahnaz Shamsi-Sanimahnaz.shams1988@yahoo.com3Mohadeseh Seddighiseddighi_149@yahoo.com4Department of Chemistry, College of Science, University of Guilan, Rasht, zip code 41335, I.R. Iran.Department of Chemistry, College of Science, University of Guilan, Rasht, zip code 41335, I.R. Iran.Department of Chemistry, College of Science, University of Guilan, Rasht, zip code 41335, I.R. Iran.Department of Chemistry, College of Science, University of Guilan, Rasht, zip code 41335, I.R. Iran.A mild, efficient and fast method for the trimethylsilyl (TMS), tetrahydropyranyl (THP) and methoxymethyl (MOM) protection of alcohols and phenols in the presence of sulfonated rice husk ash (RHA-SO3H) is reported. All reactions were performed at room temperature in high to excellent yields. All the products are separated and compared with authentic samples and/ or identified using different types of methods including FT-IR, 1H NMR and 13C NMR spectroscopy. Ease of the preparation and handling of the catalyst, heterogeneous reaction conditions, reusability of the catalyst, easy work-up procedure and short reaction times are the main advantages of this method, which make this procedure useful and attractive addition to the available methods.http://ijc.iaush.ac.ir/article_10084_96483899300873614bf9909b790da042.pdfSulfonated rice husk ashTrimethylsilylationTetrahydropyranylationMethoxymethylationProtectionengIslamic Azad University, Shahreza BranchIranian Journal of Catalysis2252-02362345-48652015-12-015438338510085Spotlight- Molecular iodineMayuri Naiknaikmayuri18@yahoo.in1Department of chemistry, Goa University, Taleigao plateau, Goa, 403 206, IndiaMayuri M. Naik was born in 1988 in Curchorem, Goa (India). She completed her B.Sc. from Government College of arts, science and commerce, Quepem-Goa in 2008. She received her M.Sc. degree in organic chemistry from Goa University in 2010. Presently she is proceeding with Ph.D. under the supervision of Prof. S. G. Tilve and Prof. V. P. Kamat in department of chemistry, Goa University, Goa. Her research interest is mainly focussed on developing synthetic methodologies towards various oxygen heterocycles and use of green catalysts in their syntheses.http://ijc.iaush.ac.ir/article_10085_784dbb56cbebb5453fdd7bd850781159.pdf